HP J4868A User Manual - Page 18

Installing the Switch 2124 Installing the Switch 2124 Installation Procedures 1. Prepare the Installation Site I Cabling Infrastructure - Ensure that the cabling infrastructure meets the necessary network specifications. See the following table for cable types and lengths, and see appendix B, "Switch Ports and Network Cables" for more information: Table 2-1. Summary of Cable Types to Use with the Switch Port Type 10/100Base-TX 100Base-FX for transceiver connection Cable Type • 10 Mbps operation: Category 3, 4, or 5, 100-ohm differential unshielded twisted-pair (UTP) or shielded twisted-pair (STP). • 100 Mbps operation: Category 5, 100-ohm differential UTP or STP. 62.5/125 ←m or 50/125 ←m (core/cladding) diameter, graded-index, multimode fiberoptic cables, complying with the ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a respectively, fitted with SC connectors. Length Limits 100 meters. Note: Since the 10Base-T operation is through 10/100Base-TX ports, if you ever want to upgrade the ports to 100Base-TX, it would be best to cable the ports initially with category 5 cable. The 10/100-Base-TX ports on the Switch 2124 include the"HP Auto-MDIX" feature, which allows you to use either straight-through or crossover twisted-pair cables for connecting to any network devices including end nodes, such as computers, or to other switches, hubs, and routers. 2 kilometers for full-duplex connections. (When installed in a Switch 2124, the HP 100-FX SC Transceiver operates only in full-duplex mode.) I Installation Location - Before installing the switch, plan its location and orientation relative to other devices and equipment: • At the front of the switch, leave at least 7.6 cm (3 inches) of space for the twisted-pair and fiber-optic cabling. • At the back of the switch, leave at least 7.6 cm (3 inches) of space for the power cord and cooling. • On the sides of the switch, leave at least 3.8 cm (1 1/2 inches) for cooling. 2-4